Abrasive cutting roll



Jan. 4, 1949. H. M. FIELD ABRASIVE CUTTING ROLL 3 Sheets-Sheet 1 Filed April 2, 1947 Jan. 4, 1949. H. M. FIELD ABRASIVE CUTTING ROLL Filed April 2, 1947 3 She'ets-Sheet 2 a m EMF Zd Jan. 4, 1949. H. M. FIELD ABRASIVE CUTTING ROLL 3 Sheets-Sheet 3 Filed April 2, 1947 Emma;

Patented Jan. 4, 1949 on1 TiED STATES Ar NT" Hot-Files xABRASIVE CUTTING .ROLL

Henry Marshall Field,-Daytn, Ohio .Application April 2, 1947, Serial No.. 738,821

Thisinvention relates ,to abrasive cutting rolls and more particularly toiormation of. an abrasive roll formed of emery cloth or the like, wound with .adhesive tape at .one end for holding the blank .in a roll.

.It.is..an.0bjectof .this invention to'provide an abrasive cutting roll of the kind .to be more spe- 4 Claims. (01. 5- 190) cifically described hereinafter, which will possess a certain amount of rigidity, for cutting the work with which it is used, andyet possess a certain amount of flexibility, whereby the roll may be bent along its length for following the contour of the work piece. 'Heretofore, it has been the prac ties to apply glue tovthe smooth side of a blank of emerynloth or similar materialfrolling the blank to the desiredshape andpermitting the glue to set .for fastening the edge of the roll to the underlying layers .of .material. method has resultedin much success, the abrasive ro"1 so formed has been quiterigiddue to the inelasticityof the glued surfaces, where any Figure 5'is a longitudinal .SECtiOl'l'tZtkGIl on'the lines-5 or Figure 3,

Figure 6 is a side elevation, partly'broken away, ota modified form of .abrasivecutting'roll wherein the abrasivesur'face isliocated on the inside :of

the cylindrical roll,

Figure 7 .is an end elevation of the. abrasive cutting roll shown l in .Figure 6,

Figure .8 is a side elevation, partlybrokenaway, of a still "further modification of this invention, .Figure'Qis atop plan viewypartly broken away, ofthe .blank having .the adhesive tape fixed on the smooth surface of the strip or .abrading ma- While this 1 bending of the roll resulted in cracking of the glue, separation of therglued surfaces, and im-"" mediate breakdown of the roll. .Also, the glued surfaces .of the abrasive .roll whenformed .in this old manner, were required .to .be smooth, ,as the glue did not adhere well to .the abrasive surface.

This invention relates .to an improved abrading' roll, wherein astrip ofadhesive tape, having an adhesive surface on .bothisides, is applied to an edge ofa blankrolled .to the desired shape, as -a cylinder.

In thismanner, vthe tape may .be applied equallyas well to the rear-orsmooth sur' face, or to thefront abrasive surface. The adhesive tape may-beef ,thepressure typeor hard drying type, .and willbe flexible so that the adhesive roll will'have a certain degreeof flexibility,-

Another objector this invention is to provide an abrasive rollheld inshape'by a strip .of .adhesive tape, with adhesive on bothsides, applied to one edge of ,a blank-of material whereby the adhesive tape will be .fixedto the overlying layers 1 q .01 the roll.

Still another object of this inventionis to provide an abrasive roll held in shape by a strip of adhesive tapewonndabout-one edge of the rolled material.

With the above and other-objects in view, my invention consists in the arrangement, combination and details of construction-disclosed in the 'terial,

Figure 10 is a plan view, partly broken away of a blank showingthe adhesive tape'fixed on the abrasive surface,

' Figure 11 is a plan view of ablank and adhesive tape which .is used for securing the tape in the roll, as shown in Figures 3 and 8. I

.Figure .12 is a top plan view, ,partly broken away, of still .another modification,

Figure '13 is.a side elevation ofthis device,

Figure 14 is a fragmentary detail section of the interlocked roll, of Figures 12 and 13.

Referring to .the drawings, the numeral l5 designates generally aiblankor strip ofmaterial used in making abrasive cuttingrolls. The strip of material may .be emery cloth, which is most popular, having a .smoothlower surface .and ;a

roughened or abrasive cutting surface on the opposite side. .In forming these cutting .rolls, it is customary to take .a blank strip of'material and roil'it along its lengthto the contour desired for a particular job. It'has been customary to provide glue or a hard setting type on the smooth surface of the abrasivematerial and'rolling the blank to the desired shape. This method of iorming a cutting roll results in a relatively brittle abrasive element. Upon flexing of the cutting roll, the glue will crack and the cutting roll will deteriorate very rapidly. By forming .the abrasive cutting roll in the manner of 'thisinvention,

the cutting roll or cylinder will be relatively rigid throughout its length and .still maintain a certain degree .of flexibility for following the contour of irregular or tubular workpieces.

For roiling the blank l5 andsecuring it in its rolled configuration, by this invention I provide a stripof adhesive tape [6 which .has adhesive material. on both sides thereof, andapply the tape to one long edge of the .blank. The blank [5 is substantially rectangular throughout its length as at H, and is cut with adiagonal or.inclined edge H8 at one end. The edge l8 is formed .to.be the outermost edge when the blankl5 .is rolled, .to provide a substantially spiralouter edge which is longer .wearing and more. suitably resistant to the cuttin effect of the .work. onthe .cuttingroll.

The adhesive .tape .lB..may beof the pressure type of tape which isfi-Xedjto the;:.material .by pressure and will remain fixed thereto. It may be formed of other types of adhesive tape which will be suitably flexible so that the end of the roll or blank will be flexible at all times and overcome the brittle type of cutting rolls heretofore known.

In Figures 1 and 2 there is shown an abrasive cutting roll formed of a blank shown in Figure 9, with the abrasive surface l9 outermost and the adhesive tape 16 fixed or interposed between successivelayers of the blank on the smooth side thereof.

In Figures 6 and 7 the adhesive tape I6 is fixed in the same way between successive layers of rolled blank l and the abrasive surface I9 is disposed inwardly, the roll 15 being formed of a hollow cylinder.

In Figure the adhesive tape 16 is fixed imtially to the abrasive side 19 of the blank [5 before the blank is rolled to the desired shape, and the abrasive cutting roll may, be formed either as shown in Figures 1 and 2 for working radii or other surfaces, as on polishing moulds, forgin dies, match plates, plastic moulds, die casting moulds, or for deburring applications, or may be rolled in the form of a cylinder, as shown in Figures 6 and 7 for working the surfaces of rods or other suitable work where thecutting roll may better do the job by encompassing the work.

In Figures 3 and 8 the abrasive blank 15 is initially rolled to the desired shape of a solid cylinder or hollow cylinder, and the tape 16 is wound about one end of the roll when it is completed.

Instead of being interposed between the suecessive layers of the blank, the tape I6 is wound completely about the edge of the roll after the roll has been formed. This type of application of the tape it to the cutting roll may be used with the abrasive surface I9 outermost, as shown in Figures,

3 to 5, or innermost as shown in Figure 8.

The tape l6, as shown in Figures 4 and 5 is wound aboutthe blank 15 one complete turn, but may be'wound about any number of times to provide a shank on the abrasive cutting roll for, v

insertion of a chuck of a tool with which the cutting roll is used.

In the types of cutting rolls wherein the abrasive surface is disposed inwardly of the hollow cylinder, the diagonal edge l8 which forms a sharp v Referring now to Figures 12 to 14, there is shown a form of this abrasive roll, having an adhesive materialalong one longitudinal edge and so formed that that edge when the blank 20 is rolled will be interlocked with the adjacent overlying edge.

The abrasive strip 20, similar to the,

In a revolution of the cutabrasive strips described above, is formed with an vabrasive surface JZI on one side thereof and a, The adhesmooth surface 22 on the other side. sive material 24 is fixed to one longitudinal'edge of the blank 20 before the blank is rolled to the desired shape.

A series of tangs '25 are struck from the edge of .the blank upon which the adhesive material is fixed, leaving points 25 below eachtang. The

tangs 25 are preferably V-shaped and longitudi-, nallyspaced apart, forming a longitudinal series:

of tangs 25 and correlated openings v2b,

When the blank '20 is rolled upon itself to form the completed abrasiveroll, the tangs 25 of the lowermost layers are adapted to extend through the openings 26 of the overlying layer,

for interlocking the adjacent layers of the com-,

pleted roll. The interlocked edges of such an abrasive roll will provide for the more secure adhesion of the overlapping layers during the use of the roll while permitting a certain degree of flexibilityof the completed cartridge.

In the use of this type of abrasive roll, speeds of from 40,000 to 75,000 R. P. M. are frequently attained. The interldcking or interengaging tangs assist the adhesive tape orv other adhesive along the longer longitudinal edge of said blank, said blank being rolled upon itself to form a cylindrical body, said onelongitudinal edgehaving 'Vshape tangs struck therefrom'providing a series of V-shaped openings, said tangs engageable through said openings in the overlying layer of said body for interlocking the successive layers of said roll.

2. 'An abrasive roll comprising an elongated blank of flexible material having a smooth surface and an abrasive surface, adhesive along one i longitudinal edge of said blank, tangs struck from said blank along said one adhesive edge forming a series of openings adjacent each tang, said blank rolled upon itself to form a cylinder, said tangs engageable through openings of overlying layers of saidroll for interlockingly securing the edges of successive layers of said roll. 7

3. An abrasive roll comprising an elongated blank of 'flexible' material, tangs struck from said blank along one longitudinal edge forming a series of openings, said blank being rolled upon itself to form a cylinder, said tangs engageable through opening'of overlying layers of said roll for interlockingly securing the edges of successive layers of said roll. I

4. An abrasive roll comprising an elongated blank of flexible material, tangs struck from said blank along the lengththereof forminga series of openings, said blank being rolled upon itself to form a cylinder, said tangs engageable through openings of overlying layers of said roll interlockingly'securing successive layers of said roll together.

' HENRY MARSHALL FIELD,

REFERENCES CITED The following references are of record in the file of thispatent:

UNITED STATES PATENTS Number ,Name Date 343,650 Root June 15, 1886 736,114 Koenig Aug. 11, 1903 1,119.760 Koontz Dec. 1, 1914 1852.885 'Heyer Apr. 5, 1932 2,290,098 Field July 14,1942 1 2,358,724 Manchester Sept. 19, 1944 Allred Nov. 14, 1944 

